Torque Vectoring Control for Wheel Slip During Vehicle Roll
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Solution Overview
Problem
Existing vehicle control systems face challenges in effectively managing wheel slip and maintaining wheel slip control performance during vehicle turns due to the limitations of roll motion and vertical load changes, leading to repeated wheel slip and deterioration of control performance.
Innovation Solution
A method for controlling vehicle driving force by determining real-time vertical load information of each wheel and adjusting torque distribution using a torque vectoring apparatus to prevent excessive wheel slip and stabilize lateral grounding force, while considering roll dynamics and vertical load changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If driving force is increased to improve vehicle acceleration, then power output is improved, but wheel slip occurs and control performance deteriorates
Solution Approach 1:
The control system performs preliminary actions by predicting future vertical load changes based on current roll motion state and suspension characteristics before wheel slip actually occurs. This allows the system to proactively adjust driving force to prevent slip rather than reacting after slip has occurred, thereby maintaining both power output and control performance.
Solution Approach 2:
The system dynamically adjusts the driving force control strategy based on real-time vertical load information that varies with roll motion. By making the control parameters adaptive to changing vehicle conditions, the system can optimize the balance between power delivery and slip prevention under different operating conditions.
2Reliability
If TCS reduces driving force to prevent wheel slip, then wheel slip is controlled, but roll motion causes repeated slip and control performance deteriorates
Solution Approach 1:
By predicting vertical load changes before they occur based on roll motion analysis, the system can preemptively adjust driving force to prevent slip from occurring in the first place. This eliminates the need for repeated TCS intervention and maintains stable control performance throughout the maneuver.
Solution Approach 2:
The system uses feedback from vertical load sensors and roll motion detection to continuously monitor tire contact conditions. This real-time feedback allows the control system to detect when vertical load is decreasing due to roll and adjust driving force accordingly, preventing repeated slip cycles.
3Reliability
If real-time vertical load information is used to adjust torque distribution, then wheel slip control is improved, but device complexity increases
Solution Approach 1:
The control system integrates multiple functions into a single unified controller that handles both roll motion analysis and driving force control. By making the control unit multi-functional, the system avoids adding separate dedicated hardware for each function, thereby limiting the increase in device complexity while still achieving improved wheel slip control through vertical load information.
Data Source
AI summary
A driving method of controlling a vehicle is provided to solve the problem of a repeated wheel slip and deterioration of wheel slip control performance due to a roll motion by controlling the driving force of a vehicle by reflecting vertical load information of tires in real time while the vehicle is turning, to a method that can solve the problem of a repeated wheel slip and deterioration of wheel slip control performance due to a roll motion by controlling the driving force of a vehicle by reflecting vertical load information of tires in real time while the vehicle is turning.